Cambridge O Level Physics 5054/21 Oct/Nov 2025 | Full Paper 2 Worked Solutions

Full animated worked solutions for Cambridge O Level Physics 5054/21 Paper 2 Theory, October/November 2025. This video explains all questions Q1–Q9 with clear step-by-step physics reasoning, formula substitution, diagrams, and final answers. Answers have been cross-checked with the official mark scheme. Chapters: 00:00 Q1 Momentum-time graph, force, kinetic energy and mass 01:36 Q2 Motor, work done, energy input and efficiency 03:13 Q3 Thermal energy, ice melting and conduction 05:04 Q4 Refraction and converging lens ray diagram 06:28 Q5 Evaporation, induction heating and convection 07:36 Q6 Resistance, power and resistor geometry 09:09 Q7 Static charge and charging by induction 10:22 Q8 Isotopes, alpha decay and Rutherford scattering 11:36 Q9 Newton’s first law and circular orbits Paper: Cambridge O Level Physics 5054/21 O/N 2025 Video style: Animated 4K worked solution with voice explanation Disclaimer: This is an independent educational solution video and is not affiliated with or endorsed by Cambridge Assessment International Education. Narration uses a paid licensed AI voice (Azure Neural TTS). I’m a non-native English speaker and use this voice to teach international students with clear, consistent explanations. All physics solutions and animations are prepared by me. #OLevelPhysics #CambridgeOLevel #Physics5054 #PastPaperSolutions #InternationalEducation